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ECG electrodes
Latest news
- 11 OctApple Watch Ultra 4 adds redesigned sensors and improves battery life
The Indian Express review says the Apple Watch Ultra 4 keeps the same external design but adds more electrodes and redesigned ECG and optical sensors on the back. The watch can provide heart-rate updates every five seconds with a two-minute history and lasts about two days in normal use or nearly four days in low power mode.
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